GEOLOGY

Detailed explanation-1: -Coal is a sedimentary rock formed over millions of years from compressed plants. Inorganic detrital rocks, on the other hand, are formed from broken up pieces of other rocks, not from living things. These rocks are often called clastic sedimentary rocks.

Detailed explanation-2: -The process of sedimentary rock formation takes millions of years to complete only to begin a new cycle of rock formation.

Detailed explanation-3: -Sedimentary rocks are formed when eroded fragments of old rocks and dead organisms settle (usually in seas or rivers) to form a sediment. Over millions of years, layers of sediment build up and are buried one on top of the other. They are compressed, and their weight squeezes out the water.

Detailed explanation-4: -Because sedimentary rocks take millions of years to form, the environment that is depositing the material they are made out of will change over time.

Detailed explanation-5: -The rock cycle really has no beginning or end. It just continues. The processes involved in the rock cycle take place over hundreds, thousands, or even millions of years. Even though for us rocks are solid and unchanging, they slowly change all the time.